No dragon can resist the fascination of riddling talk and of wasting time trying to understand it.

And then all the host of Rohan burst into song, and they sang as they slew, for the joy of battle was on them, and the sound of their singing that was fair and terrible came even to the City.

But you comfort me, Gimli, I'm glad to have you standing nigh with your stout legs and your hard axe. I wish there were more of your kin among us. But even more would I give for a hundred good archers of Mirkwood." - Legolas

Then Elrond and Galadriel rode on; for the Third Age was over and the Days of the Rings were passed and an end was come of the story and song of those times.

Never laugh at live dragons, Bilbo you fool!" he said to himself, and it became a favourite saying of his later, and passed into a proverb. "You aren't nearly through this adventure yet," he added, and that was pretty true as well.

You have nice manners for a thief and a liar," said the dragon.

And that's the way of a real tale. Take any one that you're fond of. You may know, or guess, what kind of a tale it is, happy-ending or sad-ending, but the people in it don't know. And you don't want them to.